2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
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8 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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32 #include <sys/cdefs.h>
33 __SCCSID("@(#)termios.c 8.2 (Berkeley) 2/21/94");
34 #include "namespace.h"
35 #include <sys/types.h>
36 #include <sys/fcntl.h>
37 #include <sys/ioctl.h>
45 #include "un-namespace.h"
47 #include "libc_private.h"
50 tcgetattr(int fd, struct termios *t)
53 return (_ioctl(fd, TIOCGETA, t));
57 tcsetattr(int fd, int opt, const struct termios *t)
59 struct termios localterm;
63 localterm.c_cflag |= CIGNORE;
66 switch (opt & ~TCSASOFT) {
68 return (_ioctl(fd, TIOCSETA, t));
70 return (_ioctl(fd, TIOCSETAW, t));
72 return (_ioctl(fd, TIOCSETAF, t));
80 tcsetpgrp(int fd, pid_t pgrp)
85 return (_ioctl(fd, TIOCSPGRP, &s));
93 if (_ioctl(fd, TIOCGPGRP, &s) < 0)
104 if (_ioctl(fd, TIOCGSID, &s) < 0)
111 tcsetsid(int fd, pid_t pid)
114 if (pid != getsid(0)) {
119 return (_ioctl(fd, TIOCSCTTY, NULL));
123 cfgetospeed(const struct termios *t)
126 return (t->c_ospeed);
130 cfgetispeed(const struct termios *t)
133 return (t->c_ispeed);
137 cfsetospeed(struct termios *t, speed_t speed)
145 cfsetispeed(struct termios *t, speed_t speed)
153 cfsetspeed(struct termios *t, speed_t speed)
156 t->c_ispeed = t->c_ospeed = speed;
161 * Make a pre-existing termios structure into "raw" mode: character-at-a-time
162 * mode with no characters interpreted, 8-bit data path.
165 cfmakeraw(struct termios *t)
168 t->c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR);
169 t->c_iflag |= IGNBRK;
170 t->c_oflag &= ~OPOST;
171 t->c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN);
172 t->c_cflag &= ~(CSIZE|PARENB);
173 t->c_cflag |= CS8|CREAD;
179 * Obtain a termios structure which is similar to the one provided by
183 cfmakesane(struct termios *t)
186 t->c_cflag = TTYDEF_CFLAG;
187 t->c_iflag = TTYDEF_IFLAG;
188 t->c_lflag = TTYDEF_LFLAG;
189 t->c_oflag = TTYDEF_OFLAG;
190 t->c_ispeed = TTYDEF_SPEED;
191 t->c_ospeed = TTYDEF_SPEED;
192 memcpy(&t->c_cc, ttydefchars, sizeof ttydefchars);
196 tcsendbreak(int fd, int len __unused)
198 struct timeval sleepytime;
200 sleepytime.tv_sec = 0;
201 sleepytime.tv_usec = 400000;
202 if (_ioctl(fd, TIOCSBRK, 0) == -1)
204 (void)_select(0, 0, 0, 0, &sleepytime);
205 if (_ioctl(fd, TIOCCBRK, 0) == -1)
211 __libc_tcdrain(int fd)
214 return (_ioctl(fd, TIOCDRAIN, 0));
222 return (((int (*)(int))
223 __libc_interposing[INTERPOS_tcdrain])(fd));
226 __weak_reference(__libc_tcdrain, __tcdrain);
227 __weak_reference(__libc_tcdrain, _tcdrain);
230 tcflush(int fd, int which)
242 com = FREAD | FWRITE;
248 return (_ioctl(fd, TIOCFLUSH, &com));
252 tcflow(int fd, int action)
259 return (_ioctl(fd, TIOCSTOP, 0));
261 return (_ioctl(fd, TIOCSTART, 0));
264 if (tcgetattr(fd, &term) == -1)
266 c = term.c_cc[action == TCIOFF ? VSTOP : VSTART];
267 if (c != _POSIX_VDISABLE && _write(fd, &c, sizeof(c)) == -1)
278 tcgetwinsize(int fd, struct winsize *w)
281 return (_ioctl(fd, TIOCGWINSZ, w));
285 tcsetwinsize(int fd, const struct winsize *w)
288 return (_ioctl(fd, TIOCSWINSZ, w));